Forum: industry experts on the development trend of LED industry

In the end of the day of the founding of the Guangdong Institute of lighting was held in the afternoon of the Guangdong lighting academic forum. Guangdong Lighting Association chairman Wang Gang, Shanghai Institute of lighting long Yu Anqi were made entitled "special academic report LED source integration trend and key technology" and "LED control device standard safety and performance requirements and main products of common problems"; Guangdong province Lighting Association Secretary General Li Zili and Deputy Secretary General Li Ximing as the theme of the report entitled "the standard of LED and LED in Guangdong province" and "benchmarking LED lighting exports to Japan technical regulations analysis", the relevant standards and regulations, testing for the preaching and introduced by the welcome and will.

Yu Anqi, director of Shanghai lighting society, national electric light source quality supervision and Inspection Center (Shanghai):

LED lighting more people-oriented development

Good design is the LED control device to give full play to the advantages of LED light source protection. LED control device for auto control device, equivalent safety extra low voltage or isolated control device, independent safety extra low voltage control device 3, which do not apply to the output voltage up to SELV lighting occasions and additional anti shock protection occasions over the full installation; with similar protective function of the shell. In the lamp or lamps for no additional protection occasions, if appropriate with dustproof and waterproof grade, also can be directly installed in the outdoor.

In all kinds of artificial light source, LED is the most suitable for the dimming state, its wide dynamic range can achieve 0 ~ 100% dimming. In addition, LED is also the only type of artificial light with the control circuit, and when the output power is reduced, the light effect instead of the product. Through dimming, LED in some areas more management and control of the advantages of energy saving.

For a single string LED module, the constant current source drive or adjust the operating current to achieve dimming is the most reliable choice. However, if the constant voltage circuit, and then the use of cross flow circuit or the use of LED module in the cross flow circuit, but also to achieve the purpose of stabilizing the LED. At this point, the constant voltage circuit and the external current circuit and the constant current circuit in the LED module should be considered as a LED control device.

The performances of LED control device quality, directly related to the important function of LED lighting appliances overall efficiency and service life, but the safety index is required to ensure the right users and the surrounding environment harm produced a higher standard (mandatory), LED control device only in the premise of meeting the safety requirements of the that makes sense to measure its performance.

We need to keep in mind is that lighting is to serve the people is the first priority. People oriented efficient lighting, can meet the needs of people, can not damage the eye health, in this context, we can promote efficient lighting. In addition, do not blindly emphasize the high lumen per watt, but also pay attention to the quality of light. Good products need to fully consider the lighting needs of the people, including security, performance, EMC, coupled with first-class design, this is the perfect green lighting. Unilateral, not in line with human health and safety of lighting can not be called efficient lighting.

Dean of Foshan Institute of Zhongshan University, Wang Gang, chairman of Guangdong lighting society:

LED light source integration trend irreversible

From the current LED market size, China has become the leading force in the LED market. Compared with the international leading enterprises to master the LED key equipment, chip epitaxy and materials and other industrial chain upstream, the advantages of China's LED industry in the middle and lower reaches of LED packaging and application. If China's focus on the level of LED light source, the future may be in the whole industry chain to grasp a greater voice. Around the LED light source technology, can form a number of supporting technologies, such as tight integrated optical design, integrated light source reliability technology, standardization technology, etc.. Only by grasping the key point of LED light source technology can accelerate the development of China's LED industry, enhance the overall competitiveness.

Today, LED light source technology is more and more concerned by the industry, the development of LED light source will be more inclined to the development of electronic equipment, increasingly showing the trend of integration and integration. LED integrated light source module technology covers a single LED chip array integration (COB) packaging technology, hybrid integrated light source components (light engine technology), monolithic integrated super light source chip technology at 3 different levels.

At present, COB module packaging technology has begun to be applied to the lighting products, in the interior of the LED bulb bulb, spotlights and other commercial lighting products occupy a certain market. At present, the problem has not been solved the reliability of COB packaging technology is greater than 40W, the silicon reflector technology problems need to be further breakthrough, if these problems are solved, it is possible to achieve a breakthrough in the silicon wafer level package. In the future, the COB package will be changed greatly, and the development of high power, low cost packaging and automatic integrated circuit technology will be developed.

Hybrid integrated light source is divided into 4 kinds, the first kind is an integrated optical and optical lens; the second is the driving circuit integration; third is the source structure, protection structure of light source module; the fourth is the master, the optical system, light emitting device, integrated circuit, protective structure and luminescence substrate are integrated.

Super light source chip technology is mainly divided into two kinds of high-voltage AC and dc. The main problem of high voltage AC packaging technology is the strobe; while the high voltage, low current work in the future development